Add kill_all function to kill multiple processes

Support for custom profiles

Makefile

@@ -1,11 +1,13 @@
-CC ?= gcc
+CROSS_COMPILE ?= 
+CC := $(CROSS_COMPILE)gcc
+STRIP := $(CROSS_COMPILE)strip
 CFLAGS += -g -Wall -I../iniparser/src -L../iniparser
 LIBS = -liniparser
 OBJ := cproxy
 
-all: cproxy.o conf.o cproxy_request.o cproxy_help.o
+all: cproxy.o conf.o cproxy_request.o cproxy_help.o kill.o
 	$(CC) $(CFLAGS) -o $(OBJ) $^ $(LIBS)
-	strip $(OBJ)
+	$(STRIP) $(OBJ)
 	-chmod a+x $(OBJ)
 .c.o:
 	$(CC) $(CFLAGS) -c $< $(LIBS)

README.md

@@ -11,3 +11,16 @@
     make
     cd ../cproxy
     make clean; make
+    
+# Help Information
+    cproxy proxy server
+    Author: aixiao@aixiao.me
+    Usage: [-?hdsc] [-s signal] [-c filename]
+
+    Options:
+        -h            : help information
+        -d            : daemon
+        -s signal     : send signal to a master process: stop
+        -c filename   : set configuration file (default: conf/nginx.conf)
+
+    May  7 2019 18:48:10 Compile、link.

conf.c

@@ -18,6 +18,7 @@ void read_conf(char *file, conf *p)
     }
     memset(p->server_pid_file, 0, p->len_server_pid_file);
     memcpy(p->server_pid_file, iniparser_getstring(ini, "server:PID_FILE", NULL), p->len_server_pid_file);
+    //printf("%s\n", p->server_pid_file);
 
     // http ip
     p->len_http_ip = strlen(iniparser_getstring(ini, "http:http_ip", NULL)) + 1;

cproxy.c

@@ -1,4 +1,5 @@
 #include "cproxy.h"
+#include "kill.h"
 
 char *read_data(int client_sock, char *data, int *data_len)
 {
@@ -183,9 +184,16 @@ int create_server_socket(int port)
 }
 
 // 守护
-int init_daemon(int nochdir, int noclose, conf *configure)
+int init_daemon(int nochdir, int noclose, conf *configure, char *path)
 {
-    FILE *fp = fopen(configure->server_pid_file, "w");
+    char *p = strcat(path, configure->server_pid_file);
+    FILE *fp = fopen(p, "w");
+    if(fp == NULL) {
+        fclose(fp);
+        printf("%s Open Failed\n", p);
+        exit(1);
+    }
+
     int pid;
 
     if ((pid = fork()) < 0) {
@@ -258,9 +266,34 @@ void start_server(conf *configure)
     server_loop(configure);
 }
 
+int stop(int signal, char *program_name) {
+    if (signal == 1) {
+        struct passwd *pwent = NULL;
+        pwent = getpwnam("root");
+        return kill_all(15,1, &program_name, pwent);
+    }
+
+    return 1;
+}
+
+int get_executable_path(char *processdir, char *processname, int len)
+{
+    char *filename;
+    if (readlink("/proc/self/exe", processdir, len) <= 0) {
+        return -1;
+    }
+    filename = strrchr(processdir, '/');
+    if (filename == NULL)
+        return -1;
+    ++filename;
+    strcpy(processname, filename);
+    *filename = '\0';
+    return (int)(filename - processdir);
+}
+
 int _main(int argc, char *argv[])
 {
-    //初始化全局变量
+    // 初始化全局变量
     header_buffer = (char *)malloc(BUF_SIZE);
     len_header_buffer = strlen(header_buffer);
 
@@ -268,22 +301,37 @@ int _main(int argc, char *argv[])
     len_complete_data = strlen(complete_data);
 
     char *inifile = "conf/cproxy.ini";
+    char path[PATH_SIZE] = { 0 };
+    char executable_filename[PATH_SIZE] = { 0 };
+    (void)get_executable_path(path, executable_filename, sizeof(path));
+    inifile=strcat(path, inifile);
+
     conf *configure = (struct CONF *)malloc(sizeof(struct CONF));
     read_conf(inifile, configure);
 
     local_port = configure->server_port;
 
     int opt;
-    char optstrs[] = ":l:dh";
+    char optstrs[] = ":l:ds:c:h?";
     while (-1 != (opt = getopt(argc, argv, optstrs))) {
         switch (opt) {
         case 'l':
             local_port = atoi(optarg);
             break;
         case 'd':
-            init_daemon(1, 1, configure);
+            (void)get_executable_path(path, executable_filename, sizeof(path));
+            init_daemon(1, 1, configure, path);
             break;
-        case 'h':
+        case 's':
+            if (strcasecmp(optarg, "stop") == 0)
+                stop(1,  executable_filename);
+            exit(0);
+            break;
+        case 'c':
+            inifile=optarg;
+            read_conf(inifile, configure);
+            break;
+        case 'h': case '?':
             help_information();
             exit(0);
             break;

cproxy.h

@@ -18,6 +18,9 @@
 #include <sys/stat.h>
 #include <fcntl.h>
 
+#include <dirent.h>
+
+#define PATH_SIZE 270
 #define BUF_SIZE 8192
 #define BUF_SIZES 1024
 
@@ -85,7 +88,7 @@ int receive_data(int socket, char *buffer, int len);
 void forward_data(int source_sock, int destination_sock);
 int create_connection(conf *configure, int SIGN);
 int create_server_socket(int port);
-int init_daemon(int nochdir, int noclose, conf *configure);
+int init_daemon(int nochdir, int noclose, conf *configure, char *path);
 void sigchld_handler(int signal);
 void server_loop(conf *configure);
 void start_server(conf *configure);

cproxy_help.c

@@ -10,20 +10,24 @@ char help_information(void)
     } author = {
     "aixiao@aixiao.me", "aixiao", "Author:", "Email :",};
     static const char usage[] =
-        "usage: [-d] [-h]";
+        "Usage: [-?hdsc] [-s signal] [-c filename]";
 
     static const char *s_help[] = {
-        "        -h: help information",
+        "",
-        "        -d: daemon",
+        "Options:",
+        "    -h            : help information",
+        "    -d            : daemon",
+        "    -s signal     : send signal to a master process: stop",
+        "    -c filename   : set configuration file (default: conf/cproxy.ini)",
         "",
         0
     };
 
     
     //fprintf(stderr, "%s %s\n", author.c, author.b);
-    fprintf(stderr, "%s %s\n", author.c, author.a);
     fprintf(stderr, "%s %s\n", name, subject);
-    fprintf(stderr, "%s %s\n", name, usage);
+    fprintf(stderr, "%s %s\n", author.c, author.a);
+    fprintf(stderr, "%s\n", usage);
 
     int l;
     for (l = 0; s_help[l]; l++) {

kill.c

@@ -0,0 +1,617 @@
+#include "kill.h"
+
+static double
+uptime()
+{
+    char * savelocale;
+    char buf[2048];
+    FILE* file;
+    if (!(file=fopen( PROC_BASE "/uptime", "r"))) {
+        fprintf(stderr, "killall: error opening uptime file\n");    
+        exit(1);
+    }
+    savelocale = setlocale(LC_NUMERIC,"C");
+    if (fscanf(file, "%2047s", buf) == EOF) perror("uptime");
+    fclose(file);
+    setlocale(LC_NUMERIC,savelocale);
+    return atof(buf);
+}
+
+/* process age from jiffies to seconds via uptime */
+static double process_age(const unsigned long long jf)
+{
+    double age;
+    double sc_clk_tck = sysconf(_SC_CLK_TCK);
+    assert(sc_clk_tck > 0);
+    age = uptime() - jf / sc_clk_tck;
+    if (age < 0L)
+        return 0L;
+    return age;
+}
+
+typedef struct NAMEINFO {
+    const char *name;
+    int name_length;
+    struct stat st;
+} NAMEINFO;
+
+static pid_t opt_ns_pid = 0;
+static int verbose = 0, exact = 0, interactive = 0, reg = 0,
+           quiet = 0, wait_until_dead = 0, process_group = 0,
+           ignore_case = 0;
+static long younger_than = 0, older_than = 0;
+
+enum ns_type {
+    IPCNS = 0,
+    MNTNS,
+    NETNS,
+    PIDNS,
+    USERNS,
+    UTSNS
+};
+
+static const char *ns_names[] = {
+    [IPCNS] = "ipc",
+    [MNTNS] = "mnt",
+    [NETNS] = "net",
+    [PIDNS] = "pid",
+    [USERNS] = "user",
+    [UTSNS] = "uts",
+};
+
+static int
+load_proc_cmdline(const pid_t pid, const char *comm, char **command, int *got_long)
+{
+    FILE *file;
+    char *path, *p, *command_buf;
+    int cmd_size = 128;
+    int okay;
+
+    if (asprintf (&path, PROC_BASE "/%d/cmdline", pid) < 0)
+        return -1;
+    if (!(file = fopen (path, "r")))
+    {
+        free (path);
+        return -1;
+    }
+    free(path);
+
+    if ( (command_buf = (char *)malloc (cmd_size)) == NULL)
+        exit(1);
+
+    while (1)
+    {
+        /* look for actual command so we skip over initial "sh" if any */
+
+        /* 'cmdline' has arguments separated by nulls */
+        for (p=command_buf; ; p++)
+        {
+            int c;
+            if (p == (command_buf + cmd_size))
+            {
+                char *new_command_buf;
+                int cur_size = cmd_size;
+                cmd_size *= 2;
+                new_command_buf = (char *)realloc(command_buf, cmd_size);
+                if (!new_command_buf) {
+                    if (command_buf)
+                        free(command_buf);
+                    exit (1);
+                }
+                command_buf = new_command_buf;
+                p = command_buf + cur_size;
+            }
+            c = fgetc(file);
+            if (c == EOF || c == '\0')
+            {
+                *p = '\0';
+                break;
+            } else {
+                *p = c;
+            }
+        }
+        if (strlen(command_buf) == 0) {
+            okay = 0;
+            break;
+        }
+        p = strrchr(command_buf,'/');
+        p = p ? p+1 : command_buf;
+        if (strncmp(p, comm, COMM_LEN-1) == 0) {
+            okay = 1;
+            if (!(*command = strdup(p))) {
+                free(command_buf);
+                exit(1);
+            }
+            break;
+        }
+    }
+    (void) fclose(file);
+    free(command_buf);
+    command_buf = NULL;
+
+    if (exact && !okay)
+    {
+        if (verbose)
+            fprintf (stderr, _("killall: skipping partial match %s(%d)\n"),
+                     comm, pid);
+        *got_long = okay;
+        return -1;
+    }
+    *got_long = okay;
+    return 0;
+}
+
+static int
+ask (char *name, pid_t pid, const int signal)
+{
+    int res;
+    size_t len;
+    char *line;
+
+    line = NULL;
+    len = 0;
+
+    do {
+        if (signal == SIGTERM)
+            printf (_("Kill %s(%s%d) ? (y/N) "), name, process_group ? "pgid " : "",
+                    pid);
+        else
+            printf (_("Signal %s(%s%d) ? (y/N) "), name, process_group ? "pgid " : "",
+                    pid);
+
+        fflush (stdout);
+
+        if (getline (&line, &len, stdin) < 0)
+            return 0;
+        /* Check for default */
+        if (line[0] == '\n') {
+            free(line);
+            return 0;
+        }
+        res = rpmatch(line);
+        if (res >= 0) {
+            free(line);
+            return res;
+        }
+    } while(1);
+    /* Never should get here */
+}
+
+const char *get_ns_name(int id) {
+    if (id >= NUM_NS)
+        return NULL;
+    return ns_names[id];
+}
+
+static int get_ns(pid_t pid, int id) {
+    struct stat st;
+    char buff[50];
+    snprintf(buff, sizeof(buff), "/proc/%i/ns/%s", pid, get_ns_name(id));
+    if (stat(buff, &st))
+        return 0;
+    else
+        return st.st_ino;
+}
+
+
+static void
+free_regexp_list(regex_t *reglist, int names)
+{
+    int i;
+    for (i = 0; i < names; i++)
+        regfree(&reglist[i]);
+    free(reglist);
+}
+
+static regex_t *
+build_regexp_list(int names, char **namelist)
+{
+    int i;
+    regex_t *reglist;
+    int flag = REG_EXTENDED|REG_NOSUB;
+
+    if (!(reglist = malloc (sizeof (regex_t) * names)))
+    {
+        perror ("malloc");
+        exit (1);
+    }
+
+    if (ignore_case)
+        flag |= REG_ICASE;
+
+    for (i = 0; i < names; i++)
+    {
+        if (regcomp(&reglist[i], namelist[i], flag) != 0) 
+        {
+            fprintf(stderr, _("killall: Bad regular expression: %s\n"), namelist[i]);
+            free_regexp_list(reglist, i);
+            exit (1);
+        }
+    }
+    return reglist;
+}
+
+static NAMEINFO *
+build_nameinfo(const int names, char **namelist)
+{
+    int i;
+    NAMEINFO *ni = NULL;
+    if ( (ni = malloc(sizeof(NAMEINFO) * names)) == NULL)
+        return NULL;
+
+    for (i = 0; i < names; i++) 
+    {
+        ni[i].name = namelist[i];
+        ni[i].st.st_dev = 0;
+        if (!strchr (namelist[i], '/'))
+        {
+            ni[i].name_length = strlen (namelist[i]);
+        }
+        else if (stat (namelist[i], &(ni[i].st)) < 0)
+        {
+            perror (namelist[i]);
+            free(ni);
+            return NULL;
+        }
+    }
+    return ni;
+}
+
+static pid_t *
+create_pid_table(int *max_pids, int *pids)
+{
+    pid_t self, *pid_table;
+    int pid;
+    DIR *dir;
+    struct dirent *de;
+
+    self = getpid ();
+    if (!(dir = opendir (PROC_BASE)))
+    {
+        perror (PROC_BASE);
+        exit (1);
+    }
+    *max_pids = 256;
+    pid_table = malloc (*max_pids * sizeof (pid_t));
+    if (!pid_table)
+    {
+        perror ("malloc");
+        exit (1);
+    }
+    *pids = 0;
+    while ( (de = readdir (dir)) != NULL)
+    {
+        if (!(pid = (pid_t) atoi (de->d_name)) || pid == self)
+            continue;
+        if (*pids == *max_pids)
+        {
+            if (!(pid_table = realloc (pid_table, 2 * *pids * sizeof (pid_t))))
+            {
+                perror ("realloc");
+                exit (1);
+            }
+            *max_pids *= 2;
+        }
+        pid_table[(*pids)++] = pid;
+    }
+    (void) closedir (dir);
+    return pid_table;
+}
+
+static int
+match_process_uid(pid_t pid, uid_t uid)
+{
+    char buf[128];
+    uid_t puid;
+    FILE *f;
+    int re = -1;
+
+    snprintf (buf, sizeof buf, PROC_BASE "/%d/status", pid);
+    if (!(f = fopen (buf, "r")))
+        return 0;
+
+    while (fgets(buf, sizeof buf, f))
+    {
+        if (sscanf (buf, "Uid:\t%d", &puid))
+        {
+            re = uid==puid;
+            break;
+        }
+    }
+    fclose(f);
+    if (re==-1)
+    {
+        fprintf(stderr, _("killall: Cannot get UID from process status\n"));
+        exit(1);
+    }
+    return re;
+}
+
+static int
+load_process_name_and_age(char *comm, double *process_age_sec,
+                          const pid_t pid, int load_age)
+{
+    FILE *file;
+    char *path;
+    char buf[1024];
+    char *startcomm, *endcomm;
+    unsigned lencomm;
+    *process_age_sec = 0;
+
+    if (asprintf (&path, PROC_BASE "/%d/stat", pid) < 0)
+        return -1;
+    if (!(file = fopen (path, "r")))
+    {
+        free(path);
+        return -1;
+    }
+    free (path);
+    if (fgets(buf, 1024, file) == NULL)
+    {
+        fclose(file);
+        return -1;
+    }
+    fclose(file);
+    startcomm = strchr(buf, '(') + 1;
+    endcomm = strrchr(startcomm, ')');
+    lencomm = endcomm - startcomm;
+    if (lencomm < 0)
+        lencomm = 0;
+    if (lencomm > COMM_LEN -1)
+        lencomm = COMM_LEN -1;
+    strncpy(comm, startcomm, lencomm);
+    comm[lencomm] = '\0';
+
+    endcomm += 2; // skip ") "
+    if (load_age)
+    {
+        unsigned long long proc_stt_jf = 0;
+        if (sscanf(endcomm, "%*s %*s %*s %*s %*s %*s %*s %*s %*s %*s %*s %*s %*s %*s %*s %*s %*s %*s %*s %Lu",
+                   &proc_stt_jf) != 1)
+        {
+            return -1;
+        }
+        *process_age_sec = process_age(proc_stt_jf);
+    }
+    return lencomm;
+}
+
+#ifdef WITH_SELINUX
+int
+kill_all(int signal, int name_count, char **namelist, struct passwd *pwent, 
+         regex_t *scontext )
+#else  /*WITH_SELINUX*/
+int
+kill_all (int signal, int name_count, char **namelist, struct passwd *pwent)
+#endif /*WITH_SELINUX*/
+{
+    struct stat st;
+    NAMEINFO *name_info = NULL;
+    char *path, comm[COMM_LEN];
+    char *command = NULL;
+    pid_t *pid_table, *pid_killed;
+    pid_t *pgids = NULL;
+    int i, j, length, got_long, error;
+    int pids, max_pids, pids_killed;
+    unsigned long found;
+    regex_t *reglist = NULL;
+    long ns_ino = 0;
+#ifdef WITH_SELINUX
+    security_context_t lcontext=NULL;
+#endif /*WITH_SELINUX*/
+
+    if (opt_ns_pid)
+        ns_ino = get_ns(opt_ns_pid, PIDNS);
+
+    if (name_count && reg)
+        reglist = build_regexp_list(name_count, namelist);
+    else
+        if ( (name_info = build_nameinfo(name_count, namelist)) == NULL)
+            exit(1);
+
+    pid_table = create_pid_table(&max_pids, &pids);
+    found = 0;
+    pids_killed = 0;
+    pid_killed = malloc (max_pids * sizeof (pid_t));
+    if (!pid_killed)
+    {
+        perror ("malloc");
+        exit (1);
+    }
+    if (process_group)
+    {
+        pgids = calloc (pids, sizeof (pid_t));
+        if (!pgids)
+        {
+            perror ("malloc");
+            exit (1);
+        }
+    }
+    got_long = 0;
+    for (i = 0; i < pids; i++)
+    {
+        pid_t id;
+        int found_name = -1;
+        double process_age_sec = 0;
+        /* match by UID */
+        if (pwent && match_process_uid(pid_table[i], pwent->pw_uid)==0)
+            continue;
+        if (opt_ns_pid && ns_ino && ns_ino != get_ns(pid_table[i], PIDNS))
+            continue;
+
+#ifdef WITH_SELINUX
+        /* match by SELinux context */
+        if (scontext) 
+        {
+            if (getpidcon(pid_table[i], &lcontext) < 0)
+                continue;
+            if (regexec(scontext, lcontext, 0, NULL, 0) != 0) {
+                freecon(lcontext);
+                continue;
+            }
+            freecon(lcontext);
+        }
+#endif /*WITH_SELINUX*/
+        length = load_process_name_and_age(comm, &process_age_sec, pid_table[i], (younger_than||older_than));
+        if (length < 0)
+            continue;
+
+        /* test for process age, if required */
+        if ( younger_than && (process_age_sec > younger_than ) )
+            continue;
+        if ( older_than   && (process_age_sec < older_than ) )
+            continue;
+
+        got_long = 0;
+        if (command) {
+            free(command);
+            command = NULL;
+        }
+        if (length == COMM_LEN - 1)
+            if (load_proc_cmdline(pid_table[i], comm, &command, &got_long) < 0)
+                continue;
+
+        /* match by process name */
+        for (j = 0; j < name_count; j++)
+        {
+            if (reg)
+            {
+                if (regexec (&reglist[j], got_long ? command : comm, 0, NULL, 0) != 0)
+                    continue;
+            }
+            else /* non-regex */
+            {
+                if (!name_info[j].st.st_dev)
+                {
+                    if (length != COMM_LEN - 1 || name_info[j].name_length < COMM_LEN - 1)
+                    {
+                        if (ignore_case == 1)
+                        {
+                            if (strcasecmp (namelist[j], comm))
+                                continue;
+                        } else {
+                            if (strcmp(namelist[j], comm))
+                                continue;
+                        }
+                    } else {
+                        if (ignore_case == 1)
+                        {
+                            if (got_long ? strcasecmp (namelist[j], command) :
+                                strncasecmp (namelist[j], comm, COMM_LEN - 1))
+                                continue;
+                        } else {
+                            if (got_long ? strcmp (namelist[j], command) :
+                                strncmp (namelist[j], comm, COMM_LEN - 1))
+                                continue;
+                        }
+                    }
+                } else {
+                    int ok = 1; 
+                    if (asprintf (&path, PROC_BASE "/%d/exe", pid_table[i]) < 0)
+                        continue;
+                    if (stat (path, &st) < 0) 
+                        ok = 0;
+                    else if (name_info[j].st.st_dev != st.st_dev ||
+                             name_info[j].st.st_ino != st.st_ino)
+                    {
+                        /* maybe the binary has been modified and std[j].st_ino
+                         * is not reliable anymore. We need to compare paths.
+                         */
+                        size_t len = strlen(namelist[j]);
+                        char *linkbuf = malloc(len + 1);
+
+                        if (!linkbuf ||
+                            readlink(path, linkbuf, len + 1) != (ssize_t)len ||
+                            memcmp(namelist[j], linkbuf, len))
+                            ok = 0;
+                        free(linkbuf);
+                    }
+                    free(path);
+                    if (!ok)
+                        continue;
+                }
+            } /* non-regex */
+            found_name = j;
+            break;
+        }  
+        if (name_count && found_name==-1)
+            continue;  /* match by process name faild */
+
+        /* check for process group */
+        if (!process_group)
+            id = pid_table[i];
+        else
+        {
+            int j;
+
+            id = getpgid (pid_table[i]);
+            pgids[i] = id;
+            if (id < 0)
+            {
+                fprintf (stderr, "killall: getpgid(%d): %s\n",
+                         pid_table[i], strerror (errno));
+            }
+            for (j = 0; j < i; j++)
+                if (pgids[j] == id)
+                    break;
+            if (j < i)
+                continue;
+        }    
+        if (interactive && !ask (comm, id, signal))
+            continue;
+        if (kill (process_group ? -id : id, signal) >= 0)
+        {
+            if (verbose)
+                fprintf (stderr, _("Killed %s(%s%d) with signal %d\n"), got_long ? command :
+                         comm, process_group ? "pgid " : "", id, signal);
+            if (found_name >= 0)
+                /* mark item of namelist */
+                found |= 1UL << found_name;
+            pid_killed[pids_killed++] = id;
+        }
+        else if (errno != ESRCH || interactive)
+            fprintf (stderr, "%s(%d): %s\n", got_long ? command :
+                     comm, id, strerror (errno));
+    }
+    if (command)
+        free(command);
+    if (reglist)
+        free_regexp_list(reglist, name_count);
+    free(pgids);
+    if (!quiet)
+        for (i = 0; i < name_count; i++)
+            if (!(found & (1UL << i)))
+                fprintf (stderr, _("%s: no process found\n"), namelist[i]);
+    if (name_count)
+        /* killall returns a zero return code if at least one process has 
+         * been killed for each listed command. */
+        error = found == ((1UL << (name_count - 1)) | ((1UL << (name_count - 1)) - 1)) ? 0 : 1;
+    else
+        /* in nameless mode killall returns a zero return code if at least 
+         * one process has killed */
+        error = pids_killed ? 0 : 1;
+    /*
+     * We scan all (supposedly) killed processes every second to detect dead
+     * processes as soon as possible in order to limit problems of race with
+     * PID re-use.
+     */
+    while (pids_killed && wait_until_dead)
+    {
+        for (i = 0; i < pids_killed;)
+        {
+            if (kill (process_group ? -pid_killed[i] : pid_killed[i], 0) < 0 &&
+                errno == ESRCH)
+            {
+                pid_killed[i] = pid_killed[--pids_killed];
+                continue;
+            }
+            i++;
+        }
+        sleep (1);        /* wait a bit longer */
+    }
+    free(pid_killed);
+    free(pid_table);
+    free(name_info);
+    return error;
+}
+

kill.h

@@ -0,0 +1,56 @@
+#ifndef KILL_H
+#define KILL_H
+
+#ifndef _GNU_SOURCE
+#define _GNU_SOURCE
+#endif
+#include <stdlib.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include <dirent.h>
+#include <signal.h>
+#include <errno.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <getopt.h>
+#include <pwd.h>
+#include <regex.h>
+#include <ctype.h>
+#include <assert.h>
+#include <errno.h>
+#include <locale.h>
+
+#ifndef I18N_H
+#define I18N_H
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#ifdef ENABLE_NLS
+#include <locale.h>
+#include <libintl.h>
+#define _(String) gettext (String)
+#else
+#define _(String) (String)
+#endif
+
+#endif
+
+#ifndef HAVE_RPMATCH
+#define rpmatch(line) \
+	( (line == NULL)? -1 : \
+	  (*line == 'y' || *line == 'Y')? 1 : \
+	  (*line == 'n' || *line == 'N')? 0 : \
+	  -1 )
+#endif
+
+#define COMM_LEN 64
+#define PROC_BASE "/proc"
+#define NUM_NS 6
+
+int kill_all (int signal, int name_count, char **namelist, struct passwd *pwent);
+
+#endif